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  1. Hi, I am trying to use microphone and audio-out of Nexys 4 board from Digilant. I have the following questions: 1. I implemented the refernce audio design provided by digilant which records audio for 5 seconds and play-back the recording from RAM. I noticed that both the interface namely micro-phone and audio-out operate on same clock domain and PDM interface. I tried to by-pass the RAM by directly connecting micro-phone output to audio-input (after 2 pipeline stages). But the design does not work as expected. Any thoughts on this will be appreciated. 2. I would also like to process the data received in FPGA via PDM. How do I convert this to N-bit digital signal of certain frequency which corresponding to the analog signal ? Should I do a moving average over certain terms. If so, how many terms? The figure 28 in the user-guide doesn't seem to be very clear. Thanks, Paul